Tuned Port Induction Specialties. They only do domestic stuff, but they're nice and I'm sure they would test your head, or atleast tell you where to bring it.
WWW.TPIS.COM
You can contact them through
www.mnfbody.com then go to the forums.
EDIT: TPIS does have a flow bench, you can conact them at 952-448-6021 or
hpfarm@aol.com